Stock material or miscellaneous articles – Structurally defined web or sheet – Including variation in thickness
Reexamination Certificate
2005-02-08
2005-02-08
Loney, Donald J. (Department: 1772)
Stock material or miscellaneous articles
Structurally defined web or sheet
Including variation in thickness
C428S116000, C428S118000, C428S120000, C428S409000, C428S913000, C264S239000, C204S192130, C216S084000, C156S242000, C101S483000, C430S323000, C430S325000
Reexamination Certificate
active
06852390
ABSTRACT:
A durable ultraphobic surface that is capable of retaining ultraphobic properties at liquid pressures of one atmosphere and above. The surface generally includes a substrate portion with a multiplicity of projecting regularly shaped microscale or nanoscale asperities disposed so that the surface has a predetermined contact line density measured in meters of contact line per square meter of surface area equal to or greater than a contact line density value “ΛL” determined according to the formula:ΛL=-10,330γcos(θa,0+ω-90°)where γ is the surface tension of the liquid in Newtons per meter, θa,0is the experimentally measured true advancing contact angle of the liquid on the asperity material in degrees, and ω is the asperity rise angle in degrees.
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Kiyoharu Tadana
Entegris, Inc.
Loney Donald J.
Patterson Thuente Skaar & Christensen P.A.
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